Heinrich Glareanus Simulacrum

The Life

Heinrich Loriti, called Glareanus after his home canton of Glarus, was born in Mollis in 1488 into a Swiss family of modest means. He studied at Cologne, Vienna and Basel, the last of which became the central setting of his scholarly life. He was an accomplished Latin poet — crowned poet laureate by Emperor Maximilian I in 1512 — a friend and correspondent of Erasmus, and a typical figure of the northern humanist world that linked Basel, Paris, and the university towns of the Rhine. He held teaching positions at Basel and, after the confessional upheavals of the Reformation displaced him from that Protestant city, at Freiburg im Breisgau, where he remained from 1529 until his death in 1563.

His musical scholarship was the product of long life rather than early vocation. The early Isagoge in musicen (1516) established his basic theoretical positions, but the decisive work — the Dodecachordon, the "twelve-stringed instrument" — was published only in 1547, nearly four decades after the Isagoge, when Glareanus was almost sixty. It was the work of a mature humanist who had spent his life listening to the polyphony of his era with a classical ear, and had concluded that the received eight-mode system no longer adequately described what he heard.

The Thought

The central argument of the Dodecachordon is that the traditional eight-mode system, inherited from medieval practice and the Greek theoretical tradition, does not account for all the modal behaviour of actual polyphonic composition. Examining the works of Josquin des Prez — whom Glareanus regarded as the supreme composer of the age — and of his contemporaries, Glareanus observed that many melodies cadenced on C and on A with natural, unaltered ambitus, and could not be accommodated within the traditional eight modes without forcing. These melodies, he argued, constituted genuine modes that deserved their own place in the system: Ionian with final on C, and Aeolian with final on A, each with their plagal forms Hypoionian and Hypoaeolian. The twelve modes of the title replaced the eight of the tradition.

The significance of the argument, though Glareanus could not know it, was that Ionian and Aeolian are precisely the modal antecedents of what became the major and natural-minor scales of the tonal system. In recognising them as legitimate independent modes — against the weight of classical and medieval authority — Glareanus was theorising the modal raw material of tonality a century before Rameau would formalise the tonal system itself. The humanist method that led him to the argument — empirical observation of contemporary practice, reconciled with ancient theoretical authority by expansion rather than rejection — was as consequential as the specific conclusion.

The Legacy

The Dodecachordon was influential in its own time — widely read, widely cited, taken up in the theoretical treatises of the later sixteenth century — and its twelve-mode framework shaped modal theory for the remainder of the polyphonic age. The transition to tonality that began with the early Baroque (and that Rameau would later systematise) rendered the modal framework secondary, but Glareanus's specific contribution — the empirical recognition of Ionian and Aeolian as real categories of musical practice — remained quietly embedded in the foundations of what followed. For students of sixteenth-century polyphony, the Dodecachordon remains one of the indispensable primary sources, both for its theoretical content and for the extensive polyphonic examples — many by Josquin — that it preserves and analyses in detail.